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    FLUID ACTUATOR REGISTERS
    31.
    发明申请
    FLUID ACTUATOR REGISTERS 审中-公开

    公开(公告)号：US20200234092A1

    公开(公告)日：2020-07-23

    申请号：US16486119

    申请日：2017-04-14

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Daryl E. Anderson ,  Eric T. Martin ,  James R. Przybyla

    IPC: G06K15/10 ,  G06K15/02 ,  G06F9/30

    Abstract: Examples include a fluidic die. The fluidic die may comprise an array of fluid actuators, an actuation data register, a mask register, and actuation logic. The actuation data register may store actuation data that indicates fluid ejectors to actuate for a set of actuation events. The mask register may store mask data that indicates a set of fluid actuators enabled for actuation for a respective actuation event of the set of actuation events. The actuation logic may electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the mask register for the respective actuation event.

    Detect circuits for print heads
    32.
    发明授权
    Detect circuits for print heads 有权

    公开(公告)号：US10336064B2

    公开(公告)日：2019-07-02

    申请号：US15896546

    申请日：2018-02-14

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Daryl E. Anderson ,  Eric T. Martin

    IPC: B41J2/21 ,  B41J2/045 ,  B41J2/165 ,  B41J2/14

    Abstract: In some examples, a print head comprises a plurality of nozzles comprising respective heaters on the print head, each heater of the heaters to be driven by a respective firing pulse to form a bubble in a corresponding nozzle. The print head further comprises a first time repository on the print head to store a first time instant, and a second time repository on the print head to store a second time instant, and a plurality of detect circuits provided onto the print head and coupled to corresponding nozzles of the plurality of nozzles, wherein each respective detect circuit of the plurality of detect circuits is to detect a change in respective impedances for a respective nozzle at the first time instant and the second time instant.

    DETECTING FLUID LEVELS USING A VARIABLE THRESHOLD VOLTAGE
    34.
    发明申请
    DETECTING FLUID LEVELS USING A VARIABLE THRESHOLD VOLTAGE 审中-公开

    公开(公告)号：US20190111696A1

    公开(公告)日：2019-04-18

    申请号：US16094113

    申请日：2016-04-29

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Daryl E. Anderson ,  Michael W. Cumbie ,  James Michael Gardner ,  Berkeley Fisher

    IPC: B41J2/175

    Abstract: An example printing cartridge includes a sensing die including a plurality of sensing locations in thermal contact with a fluid container, an on-die controller to select a sensing location of the plurality of sensing locations to activate and to provide a variable threshold voltage, and a voltage comparator to compare a sensed voltage generated at a selected sensing location to the variable threshold voltage, and output time-based information based on the comparison, the time-based information representative of whether a fluid is present at a fluid level associated with the selected sensing location.

    Fluidic die
    35.
    发明授权
    Fluidic die 有权

    公开(公告)号：US10232610B2

    公开(公告)日：2019-03-19

    申请号：US15687694

    申请日：2017-08-28

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Daryl E. Anderson ,  George H. Corrigan ,  Scott A. Linn

    IPC: B41J2/14 ,  B41J2/045 ,  B41J2/155 ,  B41J2/175

    Abstract: A fluidic die includes a number of sensors to measure properties of a number of property control elements associated with the printhead die, a pass gate to communicate a number of signals to an application specific integrated circuit (ASIC) via an analog bus using control logic associated with the pass gate, and a bi-directional configuration bus coupled to the fluidic die to transmit a number of control signals to property control elements located on the fluidic die.

    NOZZLE CONDITION EVALUATION
    40.
    发明申请
    NOZZLE CONDITION EVALUATION 有权
    喷嘴条件评估

    公开(公告)号：US20170043573A1

    公开(公告)日：2017-02-16

    申请号：US15306028

    申请日：2014-04-25

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Daryl E. Anderson ,  Eric T. Martin

    IPC: B41J2/045 ,  B41J29/38

    CPC classification number: B41J2/0451 ,  B41J2/04555 ,  B41J2/0458 ,  B41J2/2142 ,  B41J29/38

    Abstract: The present subject matter relates to evaluating nozzle condition of a plurality of nozzles. In one example, drive bubble detect (DBD) test results for a set of nozzles from among the plurality of nozzles are stored by a print head in a test result register, where the test result register is provided onto the print head. Further, status bits of a result-ready register provided in the print head are set to a predetermined value by the print head responsive to storing of the DBD test results in the test result register. Further, based on the setting, the DBD test results are obtained by a control unit, from the test result register, for evaluating the nozzle condition.

    Abstract translation: 本发明涉及评估多个喷嘴的喷嘴状况。 在一个示例中，来自多个喷嘴的一组喷嘴的驱动器气泡检测（DBD）测试结果由打印头存储在测试结果寄存器中，其中测试结果寄存器被提供到打印头上。 此外，响应于将DBD测试结果存储在测试结果寄存器中，由打印头将设置在打印头中的结果就绪寄存器的状态位设置为预定值。 此外，基于该设定，DBD测试结果由控制单元从测试结果寄存器获得，用于评估喷嘴状况。

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